Unauthorized Data Modification in Block Editor Gallery Slider for WordPress
CVE-2025-6726

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Block Editor Gallery Slider For WordPress – Image Slider, Gallery Carousel & Lightbox Plugin
Vendor
CVE Published:
18 July 2025

What is CVE-2025-6726?

The Block Editor Gallery Slider plugin for WordPress suffers from a significant vulnerability, allowing unauthorized data modification due to a lack of proper capability validation in the classic_gallery_slider_options() function. This issue affects all versions up to and including 1.1.1, making it possible for authenticated users with Subscriber-level access and higher to modify post metadata for any post, potentially compromising site integrity and user data.

Affected Version(s)

Block Editor Gallery Slider for WordPress – Image Slider, Gallery Carousel & Lightbox Plugin 0 <= 1.1.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://wordpress.org/plugins/block-editor-gallery-slider/
https://plugins.trac.wordpress.org/changeset?sfp_email=&s...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Phong Nguyen
.